FR2546144A1 - METHOD AND DEVICE FOR PALLETING UNIT LOADS - Google Patents

Abstract

THE DEVICE IS PLACED AT THE END OF A PREPARATION TABLE 1 OF EACH LAYER 4 TO BE PLACED UNDER STACK 13. ACCORDING TO THE INVENTION, A LOADING TABLE 8 AND AT LEAST ONE RETRACTABLE SIDE FORK 17, 18 LOCATED RESPECTIVELY AT THE LEVEL OF PREPARATION 11 OF A LAYER AND AT BASIC LEVEL 12 OF THE PENDING STACKING, LEVELS WHICH ARE SPACED BY A DISTANCE AT LEAST EQUAL TO THE HEIGHT OF EACH LAYER, ANY OF THE SUPPORTS CONSTITUTED BY THE LOADING TABLE AND RESPECTIVELY, THE RETRACTABLE FORK (S) BEING FIXED, WHILE THE OTHER IS MOBILE BETWEEN THE TWO LEVELS.

Description

Method and device for palletizing single loads

  tary. The present invention relates to a method and a device for palletizing unit loads such as crates, cartons, bundles

or wrapped or other.

  Until now, the layers of charges are previously formed and the stack is mounted by depositing each new layer on the stack of

previous layers.

  In a first known device, the stack

  Ge is formed in a pit whose bottom is formed by a lifting table now the top of this stack at the level of the loading plan This pit requires large and expensive civil engineering works; it is also a source of accidents and waste accumulation; furthermore, the intervention of the mechanics responsible for maintenance and repairs

  also poses security problems.

  In a second known device, the stack

  The loading is effected at a height of 2.50 meters. In order to serve the

  loading, it is necessary to install either an inclined conveyor

  born of relatively long length,

  an important and expensive installation,

  Moreover, the operator having his workstation at.

  2 m high, can not intervene in case of incident,

breakdown or other.

  The present invention aims to remedy

  the disadvantages of these known devices.

  For this purpose and in accordance with the

  the invention, the battery is mounted by providing

  previously constituted, one after the other

  under the stacking of the previous layers.

  More particularly each new

  Che is brought under the stack of the previous layers, the support of this stack being transferred under this new base layer, while said stack is deposited thereon. The invention also extends for the

  implementation of this method, to a puck device

  intended to be placed at the end of a table of

  preparation of each layer to be placed under the stack.

  According to the invention, the device comprises a loading table and at least one retractable side fork located respectively at the preparation level of a layer and at the base level of the pending stack, which levels are separated by a distance from the less equal to the height of each layer, any of the

  supports constituted by the loading table and

  respectively the retractable forks or for being

  while the other is mobile between the two

calves.

  According to a particular embodiment

  advantageously, the loading table is

  between the two levels, while the fork or forks

  Camotables are guided in opposite directions, if

  they are two, staying at the level of above mentioned yes is fixed.

  More specifically, the loading table comprises a grid and a train of rollers, designed to support successively the new layers to place them one by one under the stack, grid whose

  knives are permanently inserted between the rolls

  and in the lateral displacement of the or -forches between the teeth thereof, the grid and the roller train being d 6 placeable relatively to one another

  between two extreme positions in which the rou-

  leaux protrude from the grid and respectively, the knives of this grid project from the rollers,

  to support each of the new layers considered

  d 6 rees, sometimes by the rollers, sometimes by the knives

  * so that the teeth of the fork or forks can fit

  said knives above said rollers and

  beneath the selected layer plated under the

  The lifting table includes a tray

  knives and a roll holder frame, the frame being connected to a lifting device and the tray being

  suspended from the frame by pivoting levers which,

  that they are free, maintain the plateau and the

  from each other and, when actuated by fixed cams when raising the frame, tend to

  by pivoting to bring the tray thereof.

  Various other features and benefits

  of the invention are also apparent from the description

detailed following.

  An embodiment of the object of the in-

  vention is represented, by way of non-limiting example,

in the attached drawing.

On this drawing:

  Figure 1 is a longitudinal elevation

  schematic, illustrating an installation

  application of the palletizing device according to the invention,

  FIG. 2 is a trans-sectional elevation

  also schematic, taken along the line II-II of Figure 1, Figure 3 is a still schematic plan view taken along the line 111-III of Figure 1, Figure 4 is a view similar to the

  Figure 1, but on a larger scale, showing only

  the means of the lifting table provided for the

  loading from below the stack.

  The installation includes a preparation table

  ration 1 with powered rollers 2 on which the

  According to the chosen distribution, the driver places unit loads 3 in order to form a layer 4 against a retractable frontal stop 5, a fixed lateral abutment 6 and an adjustable lateral abutment 7. The installation also comprises a loading table 8 with rollers 9 whose constitution and

  operation are described in the following

  FIG. 4 shows that this loading table 8 is movable in a load-bearing framework 10 between the preparation level 11 defined by the table 8 and the level

  base 12 of the stack 13 to be assembled in successive layers.

  cessives 4 of charges 3 so as to form a stack

  finished To position and tap on the table of

  8 any layer 4 coming from the table of

  preparation 8, the frame 10 supports a boundary stop

  14, a fixed lateral stop 15 and a press

lateral position 16.

  These two levels 11 and 12 are spaced from each other by at least the maximum height of a layer 4, because it is necessary not only to have sufficient space below the fixed base level 12 of the stack 13 to introduce such a layer on the table of

  loading 8, but also to have a cour-

  sufficient lifting to effect the transfer of said layer above the base level of said

  stack as described in the following.

  The installation finally includes two forks

  laterals 17 and 18 having teeth 19 and 20

  tively; these teeth are distributed rigorously like the rollers 9 on the loading table 8 and their width is substantially equal to the diameter of these rollers The forks 17 and 18 are guided in horizontal fixed rails 21 and 22 of the supporting frame 10

  and are moved in opposite translations by

  Actuators not shown These translations tend to bring the teeth 19 and 20 closer to each other.

  that they meet almost under stacking 13 (po-

  2), their upper level coinciding with the base level 12 of the stack 13 since said teeth are intended to support this stack, or to distance said

  teeth to release each other

said stacking.

  Figure 4 shows a particular embodiment

  the loading table 8 This then comprises a frame 23 supporting the rollers 9 and connected

  directly positively to a device of the-

  husbandry; in the example shown, it is constituted

  killed by endless cables 24 wound on high pulleys 25 and low 26 mounted on the corner posts

  27 of the supporting framework 10;

  high lies 25 are motor and connected for example

  to a geared motor group not represented by a trans-

  mission. The loading table 8 also comprises a plate 28 on which are fixed knives 29 extending between the rollers 9 and thus constituting a grid capable of supporting instead of the roll train 9, the layer 4 of loads 3 to be transferred The tray 28 is suspended in each corner to the frame 23 by two pivoting levers 30 and 31 articulated one

  on the other around an axis 32 to form a

  not and respectively on the plate 28 and the frame 23

  around axes 33 and 34 By its own weight, the

  water 28 hangs in position A, being suspended from the frame 23 by the compasses 30, 31 flattened obtuse angle; in this position A, the knives 29 are retracted

  under the level of support rollers 9 aui are then se-

  selected to support the layer 4 of charges 3.

  Each lever 31 is extended, beyond the axis 34, by a rocker 35 provided with an idler roller 36 cooperating for its actuation with a fixed cam 37 disposed at the top under the base level 12 of the stack 13. of the rise of the frame 23, the cam

  37 causes, by acting on the roller 36, the pivot-

  the rocker 35 (position B) in a direction such that the compass 31, 32 folds on itself at an acute angle; this folding of the compasses is accompanied by the approach of the plate 28 relative to the frame 23, bringing the blades 29 protruding above the rollers 9 and replacing them to support the layer 4 of charges 3 in

elevation course.

  At the end of the lifting stroke, the layer 4 supported by the knife grid 29 reaches the vicinity of the underside of the teeth 19, 20 of the forks 17, 18 supporting the stack 13; the forks then retract laterally and deposit said stack on the

  layer 4 considered; the knife grid 29 suppor-

  keeping you new stacking increased by below this transfer layer; it continues its lifting stroke to bring teeth 19, 20

  retracted forks, the existing free spaces,

  below the underlying layer 4, between the knives 29, above the rollers 9; it comes to a halt and the forks 17,18 get closer by penetrating into these free spaces; she goes back down and the new stacking

  is supported by the forks; when she

  dyes the level of preparation 11, it stops

  and a new layer 4 prepared on table 1

  the hidden time of the loading operation

  described above is brought on the rollers 9 of the loading table 8, rollers which during the descent have returned to the protruding position A.

  When the stack 13 is completely n Wntée ,.

  a pallet 38 is brought below by the load table-

  8 according to the same procedure.

  It is obvious that only the relati-.

  vertical reciprocating movement is important for mounting from the bottom of the stack 13 Thus, the table of

  loading 8 can be arranged at a fixed level in the

  carrier 10 and these are then the forks of manuten-

  17 and 18 which are animated by this vertical reciprocating movement in combination with their horizontal reciprocating motion; therefore, the slides 21 and 22 are placed on a support guided in translation

  vertically and connected to an alternating

  tif. On the other hand, in some cases, a single retractable fork laterally can suffice provided that its cantilever is not excessive; sidewalls can then be provided to contain at least the lower layer of the stack

  during the retraction of the single fork.

  In addition, the relative movement between the roller train 9 and the grid 29 can be applied

by an autonomous motor device.

  Furthermore, the grid 29 can be sup-

  awarded, if the charges 3 are sufficiently rigid, to distance the support lines In this case, the rollers 9 are further apart from each other for the passage

  between them teeth 19 and 20 of the handling fork.

  The invention is not limited to the embodiment shown and described in detail, as well as to its variants, since various modifications can

  to be brought without leaving the frame.

Claims (5)

R E V E N D I C A T IO N S   1 Method for palletizing unit loads   such as crates, cartons, fictitious   les or wrapped or other, characterized in that the stack (13) is mounted is bringing layers (4) previously formed, one after another under   stacking the previous layers.   Process according to claim 1, characterized   in that each new layer (4) is brought under the stack (13) of the previous layers, the support of this stack being transferred under this new layer   base, while said stack is deposited on it this.   3 Palletizing device implementing   process according to claim 1 or 2, this arrangement   sitif being placed at the end of a preparation table (1) of each layer (4) to be placed under the stack (13) and being characterized in that it comprises a table   (8) and at least one retractable side fork   ble (17,18) located respectively at the level of   paration (11) of a layer and at the base level (12) of the standby stack, which levels are separated by a distance at least equal to the height of each layer, any of the supports formed by the loading table and respectively the retractable forks or forks being fixed while the other is mobile between the two levels.   4 Device according to claim 3, characterized   characterized in that the loading table (8) is   between the two levels (11,12), while the   retractable forks (17,18) are guided in trans-   side, opposite if they are -two, remaining   at the above-mentioned base level (12) which is fixed.   Device according to claim 3 or 4, characterized in that the loading table (8) com   carries a grid (29) and a roller train (9) of   adapted to successively support the new layers (4) to place them one by one under the stack (13),   grid whose knives (29) are interspersed   between the rollers (9) and the lateral displacement of the fork or forks (17, 18) between the teeth (19, 20) thereof, the grid and the roller train being   relatively movable to one another between two   extreme situations (11,12) in which the rollers   protrude from the grid and respectively   The bars of this grid project from the rollers, in order to support each of the new layers considered, sometimes by the rollers, sometimes by the knives so that the teeth of the forks can be inserted between   said knives above said rollers and   under the selected layer plated under the stack.   Device according to claim 5, characterized   characterized in that the lift table (8) comprises a   platen (28) for cutting knife (29) and a frame (23) for   the rollers (9), the frame (23) being connected to a device   lifting device (24) and the plate (28) being suspended   to the frame by pivoting levers (30,31) which, when   that they are free (A), keep the board and the frame away from each other and, when they are   (B) by fixed cams (37 out of 35,36) during the   of the frame, tend to pivot towards the plateau of it.